Island



L. SHAPIRO.

SECTION FOR BADIATORS. APPLICATION nu-in 00129. 1919.

1,363,678, Patented Dec. 28, 1920.

, INVENTOR ATTORNEY UNITED STATES PATENT OFFICE LOUIS SHAPIRO, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO AMERICAN RADI- ATOR WORKS, A FIRM CONSISTING OF DAVID BELILOVE 86 JACOB BELILOVE,

OF PROVIDENCE, RHODE ISLAND.

SECTION FOR RADIATORS.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application filed October 29, 1919. Serial No. 334,272.

T 0 all whom it may concern:

Be it known that I, LOUIS SI-IAIIRO, a citizen of Russia, residing at Providence, in the county of Providence and State of Rhode Islandyhave invented certain new and useful Improvements in Sections for Radiators, of which the following is a specification.

My invention relates to sections for radiators or surface coolers for stationary plants or vehicles, such as automobiles.

The essential objects of my invention are to stiffen the structure, increase the cooling capacity thereof, and to attain these ends in a simple and inexpensive structure.

To the above ends essentially my invention consists in means for delaying the passage of the water through the section; in means for prolonging the passage of the air therethrough; and in disposing the fin corrugations diagonally. My invention further consists. in the features, combinations, and details of construction hereinafter described.

In the accompanying drawings which form a part of this specification,

Figure 1 is a perspective view of a radiator section embodying my invention,

Fig. 2, a vertical central transverse section of the same,

Fig. 3, a section on line 3-3 of Fig. 2,

Figs. 4 and 5 obverse and reverse sides of a fin, and

Fig. 6, an end elevation of a unit with the fin removed.

Like reference characters indicate like parts throughout the views.

As shown in the drawings the section is composed, in the illustrated form of its embodiment, of a plurality of units 8 each of which is formed by bending up a strip of thin sheet metal into an oblong loop having long vertically disposed side walls 9, and shorter top and bottom walls 10. The walls 9 are provided with horizontally disposed transversely arcuate corrugations 12 terminating at their ends in corresponding external end shoulders 18 struck up from the strip. Alternate corrugations throughout their lengths between the shoulders are concaved, as at 1.4. The corrugations on each of the two opposite walls 9 are of corresponding dimensions and disposition, each swell or apex extending in the same direction as its opposite swell. Fins 16 are stamped up from thin sheet metal of rectangular outline. These fins or plates have dimensions to admit them to be inserted in an upright position within the units, one in each unit, with their upper and lower edges in contact with the walls 10, and with their front and rear edges extending the depth of the units. In detail each fin is stamped with a series of longitudinally disposed arcuate corrugations 18 corresponding in width to corrugations 12 extending from their front and rear edges toward the center of the fin where they merge respectively in a series of diagonally disposed corrugations 19. Auxiliary shallow horizontally disposed corrugations 21 are impressed in the corrugations 18 extending from the margins of the fin to the diagonally disposed corrugations.

The units 8 are assembled side by side with their shoulders 13 in contact with each other forming sinuous vertical expanding and contracting water passages 23. The sinuous character of the passages prevents such clogging of the circulation of the liquid as occurs in a tortuous passage, while the expanding and contracting formation due to the slight concavities 14: of the apexes of the corrugations 12 delays the passage of the liquid the desired period.

When assembled each fin 16, vertically disposed in its unit 8 and face to face with the walls of the unit, has its horizontal corrugations disposed in a direction opposite to the corrugations 12 of the unit walls 9, so that alternate corrugations 18 engage alternate corrugations 12 on both walls of the unit. There are therefore in each unit two vertically arranged passages 25 and 26 for the accommodation of air, each similar in every respect, and extending lengthwise of the section. The air entering along the corrugations 18, first horizontally, is diagonally deflected vertically along the corrugations 19, and then emerges from the opposite portions of the corrugations 18. The diagonal or angular disposition of the corrugations delays the passage of the air, and this delay is further increased by the presence of the pockets formed by the small corrugations 21.

After the plates and units have been assembled as described their edges are united by the usual solder hinder 28.

I claim 1. In a section for radiators the combination of transversely corrugated sheet metal walls extending from the top to the bottom of the section formed with continuous marginal shoulders upon their ends, said corrugations being of arcuate form and alternately concaved, and arranged with. their several correspomling apices in the same direction, so as to form sinuous vertical expanding and contracting water passages between ad'acent walls, and vertically disposed fins adjacent the passages provided with corrugations engaging the corrugations of the adjacent walls 2. In a section for radiators, the combination of transversely corrugated vertically arranged sheet metal walls formed with continuous interengaging marginal water pasbetween the walls, and vertically disposed metal fins disposed between the passages provided with transverse arcuate corrugations engaging the corrugations of the adjacent Walls on both sides thereof, and provided with arcua-te diagonally disposed intermediate corrugations said transverse arcuate corrugations being also provided with narrow corrugations merging into the diagonal corrugations.

In testimony whereof I have afiiXed my signature.

LOUIS SHAPIRO. 

